EmptyKey

import Utils

protocol CaseIterable

A type that provides a collection of all of its values.

protocol Equatable

A type that can be compared for value equality.

protocol Hashable : Equatable

A type that can be hashed into a Hasher to produce an integer hash value.

protocol StringEnum : CaseIterable, Hashable

init?(rawValue: String)

static var allCases: [EmptyKey] { get }

var rawValue: String { get }

static func != (lhs: Self, rhs: Self) -> Bool

Returns a Boolean value indicating whether two values are not equal.